VFI®-4723 84 D 2:1 Deep Pour Epoxy

Thickness Requirements

Make sure the surface is level, and pour the material into the mold or form until the desired thickness is met. It can be poured in layers up to 4 inches thick. If you are pouring less than 1 inch thick, use a material with a faster pot life and cure time. If you pour above the maximum thickness, the epoxy may create excessive heat, causing the material to yellow, shrink, or crack. Pour in layers if your project must go above 4 inches.

Mold & Surface Preparation

Ensure the surface is clean, dry, and free of contaminants that may affect the material. If you are casting the material, you must apply a release agent to prevent it from adhering to the molding surface. If you are pouring it onto a porous surface, it must be sealed to prevent off-gassing or foaming from moisture. You can apply a thin layer of the epoxy as a seal coat using a brush. Then, pour a thicker layer if necessary.

Mixing

The material must be thoroughly mixed, and measurements must be exact for the material to cure properly with full physical properties. This material is a 2A:1B by volume or 100A:44B by weight. Bring both components to at least 65°F before use and premix the B side material. Pour the measured B side into the A side. Mix the material with a paddle mixer by occasionally scraping the sides and bottom of the mixing container. Transfer to a new, clean container and mix again to achieve a thorough, uniform mix.

Mixing times may vary depending on volume and mixing method. CAUTION: Depending on the overall volume being poured, the pour depth, and the ambient temperature, excessive heat may build up. Due to the exothermic reaction generated, only mix what you are ready to pour. The more you mix, the hotter the material will be, and it may cause fumes and smoke.

Application Guidelines

Epoxy is temperature-sensitive. Work in a room-temperature environment between 60-80°F with low humidity and good ventilation. Cooler conditions are recommended for deep and high-volume pours to achieve the best clarity and finish. Working above 80°F can cause the material to become too hot, causing yellowing, cracking, and shrinking. Using a fan in your work environment can help with airflow.

Cure time can vary depending on working temperature, material temperature, volume, mold material, and thickness. At 1 inch thick, VFI-4723 will be cured to the touch and can be removed from a mold after 3 days at room temperature. Full properties will develop after 7 days at room temperature.

Once cured, it is easy to work with for sanding, buffing, or completing any other post-work. If applying more layers, stay within the 24-hour repour window to ensure the layers adhere together. If the surface fully hardens, it must be sanded between pours. It can be scuffed with 80-grit sandpaper after 36 hours.

Most epoxies are not UV-resistant and will discolor, become brittle, and degrade from prolonged exposure. VFI recommends using a UV-stable top coat if the epoxy is in direct sunlight.

Cleanup

VFI recommends cleaning resin or mixed epoxy residue with lacquer thinner, acetone, or denatured alcohol.

Storage/Shelf Life

Store in a clean, dry environment between 60-90°F. If the product crystalizes, elevate the temperature to 75°F before use. The material has a shelf life of 12 months after the date of manufacture. If storing after use, tightly reseal containers. The material should be nitrogen-purged to minimize moisture contamination.

Precautions

VFI-4723 is not intended for outdoor use and has no long-term UV testing. The material may be toxic if inhaled, swallowed, or in contact with skin. Wear all necessary PPE to avoid prolonged exposure, including an approved respirator. Avoid breathing in vapors or repeated skin contact. Use only outdoors or in a well-ventilated area. See the Safety Data Sheet for complete safety information.